Convert .CHK to .BFF

Map File (.CHK)

The file extension .CHK is that given to a 'Starcraft' campaign map file.
A computer game map file .CHK contains information describing the terrain layout and design of the selected game 'arena' i.e. the area in which the game will take place.
StarCraft is a military science fiction real-time strategy video game developed by Blizzard Entertainment.